established there . adult h . gamma ##rus live on the continental shelf at depths of 0 – 150 metres ( 0 – 49 ##2 ft ) , although not normally deeper than 50 m ( 160 ft ) . they prefer hard substrates , such as rocks or hard mud , and live in holes or cr ##evic ##es , emerging at night to feed . the diet of h . gamma ##rus mostly consists of other bent ##hic invertebrates . these include crabs , mo ##llus ##cs , sea ur ##chin ##s , star ##fish and poly ##cha ##ete worms . the three clawed lobster species ho ##mar ##us gamma ##rus , h . american ##us and ne ##ph ##rop ##s nor ##ve ##gic ##us are
established there. adult h. gammarus live on the continental shelf at depths of 0 – 150 metres ( 0 – 492 ft ), although not normally deeper than 50 m ( 160 ft ). they prefer hard substrates, such as rocks or hard mud, and live in holes or crevices, emerging at night to feed. the diet of h. gammarus mostly consists of other benthic invertebrates. these include crabs, molluscs, sea urchins, starfish and polychaete worms. the three clawed lobster species homarus gammarus, h. americanus and nephrops norvegicus are